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Spectral color measurements with JENCOLOR

02-05-2009 07:49 PM CET | Industry, Real Estate & Construction

Press release from: MAZeT

/ PR Agency: hueggenberg
Spectral bands of the MMCS6

Spectral bands of the MMCS6

Jena, Germany, 28 January 2009 - MAZeT's RGB and True Color sensors are semiconductor-based sensors with RGB or XYZ interference filters for fast, time-stable color detection and absolute color measurement according to the CIE1931 DIN5033 standard. When combined with white-light LEDs, these sensors can detect accuracies in the color space that are imperceptible to the human eye. The achieved accuracy strongly depends on the light source and the calibration of the sensors. In applications that require very high color accuracy, three-element color detection quickly reaches its physical limitations, which are caused by limited light source availability and a relatively high error threshold. High-accuracy applications require spectral technologies that have a greater resolution than just three channels. A typical spectrometer would have the kind of resolution encountered in laboratory measurement devices, or in some OEM spectrometers for in-line measurements. Unfortunately, such spectrometers are too slow, too expensive and too big for most sensor applications.

With the MMCS6 Multiple Color Sensor, MAZeT is closing the gap between tri-color sensors and spectral analyzers. The MMCS6 employs compact, price-performance-optimized semiconductor sensors with integrated interference filters and combines these with seven spectral bands (ranging from 380 to 780 nm) to produce a color measurement based on spectral approximation.

In this sensor, the color is not analyzed on the colorimetric level but on the radiometric level. The output from the sensor does not indicate the color space but the color's spectrum, which is then used to compute the color space. The advantage of this method is that a lot more color information is produced.

With this sensor, metamerism effects are filtered out during capturing and analysis, which isn't possible with RGB and XYZ sensors. Metamerism effects are optically distinct spectrums that appear to be the same to the human eye when viewed in the same lighting conditions.

The spectral bands of the MMCS6 all overlap. As a result, there are virtually no gaps in the visible spectrum. This minimizes any erroneous color interpretation and increases the measurement accuracy. In typical usage scenarios, the sensor is not affected by the quality of the light source. The MMCS6's spectral approximation of the measured colors can indicate color variations that are imperceptible to the human eye.

The following table compares three sensor types and their typical measurement values. This demonstrates the different accuracy categories of color measurements using color sensors and white-light LEDs. The measurement values were attained by illuminating a set of predefined color plates with a white-light LED (lpeak = 450 nm).

MAZeT is offering the new sensor as part of OEM system solutions. It ships with an extensive software library for highly accurate and fast color measurement using hand-held or in-line devices. The amplifier component used with the sensor is MAZeT's own MTI08, which features eight programmable amplifier stages plus S&H and an MUX output. Evaluation boards are available for test measurements, which customers can integrate into their own testing software via DLLs if needed.

With the MMCS6, MAZeT is further expanding its line of color sensors with long-term stability and high temperature consistency.


Please visit MAZeT at embedded world 2009 at Stand 376 in Hall 9 Nuremburg, Germany, on March 3 to 5, 2009 ____________________________________________________________________

About MAZeT
MAZeT GmbH is a leading European development and production service provider. The company, founded in 1992 with headquarters in Jena, develops, manufactures and delivers customer-specific electronic modular units, software and ASICs, and markets its own products under the name JENCOLORTM worldwide. Due to its broad technological offerings and application know-how, MAZeT GmbH is a dependable and proven service partner for made-to-measure, customer-specific solutions in the areas of industrial electronics and optical sensors. The company's development competence and the components produced by it for special uses can be found in the whole area of industrial measurement technology, control engineering, automation and medical areas, among others. For more information please see

Diane Damer
Marketing Services

Göschwitzer Straße 32
07745 Jena

Tel.: +49 3641 2809-39
Fax: +49 3641 2809-12

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